Spiritual leadership among nursing educators: a correlational cross-sectional study with psychological capital

Background Spiritual leadership is the most positive leadership style accepted by positive organizational behavior scholars that contributes to psychological capital. Spiritual leadership could be a critical organizational resource for followers. The study aims to examine the levels of spiritual leadership and psychological capital among nursing educators and determine the relationship between spiritual leadership and psychological capital among nurse educators. Methods A cross-sectional design was applied using two tools: spiritual leadership and psychological capital scales. Over 3 months, data were collected from 213 nursing educators. Results The spiritual leadership level is moderate to high (49.8 and 38.5%). The psychological capital level is high (63.4%). The association between spiritual leadership and psychological capital is a strong, positive, and highly significant correlation (R-value = 0.63, P = 0.001). The regression analysis predicted that male participants were expected to have more spiritual leadership and psychological capital than females. Conclusion It can be concluded and validated how important it is to develop and practice spiritual leadership to foster followers’ psychological capital. Implications of nursing management as nursing leaders must have spiritual competencies to promote workplace spirituality on the daily agenda as a foundational area in management. Supplementary Information The online version contains supplementary material available at 10.1186/s12912-022-01163-y.

aspects of organizational life. This shift in mentality and psychological capital necessitates a more holistic leadership style that can integrate the minds and souls of people: namely, spiritual leadership, which was addressed by the current study [6].

Spiritual leadership
In history's scholarly communities, spiritual leadership has no unified definition. However, scholars from various cultural backgrounds have begun to agree with Fry's point of view: spiritual leaders can establish an organizational vision and organizational values based on individual and team connections and combine their attitudes, values, and behaviors to make employees feel the importance of their work, as well as appreciation and understanding of the organization [4].
Numerous studies show that work-based spiritual leadership efforts provide excellent results because spiritual leaders help their followers develop a strong calling by creating and communicating a clear and inspirational vision, strengthening their beliefs, and caring for others [7]. Furthermore, spiritual leaders feel compassion and value for employees, pay attention to upper and lower feedback during interactions with them, and do their best to respond to the demands of employees, resulting in a healthier working environment and a climate in which individuals may express themselves autonomously [8,9].

Psychological capital
Psychological capital is intellectual satisfaction that empowers the person's behavior toward the ability to face problems during their work [10]. Numerous studies reveal positive outcomes with work-based psychological capital. Employees with a high level of psychological capital can perform better, whereas those with poor psychological capital are depressed, pressured, and anxious, and consequently, they are unable to function as required, and as a result, they are unsatisfied with their jobs [11].
In addition, Lupşa et al., (2020) suggested that psychological capital is open to change and is developable, which is why it is considered to be a "state-like" rather than a "trait-like" feature. It can be modified and improved with the help of positive organizational interventions, programs, and on-the-job training [12]. As Hameed, Bano, & Ahmed (2022) concluded, academics with psychological capital can face challenges, adopt changes, exhibit positive behavior in critical situations, and expect positive results in the future, which make them satisfied with their jobs [13].

Theoretical background
From the perspective of the job demands-resources (JD-R) theory and spiritual leadership theory (SLT), it is very clear how psychological capital is influenced by spiritual leadership [4,13]. According to the JD-R model and SLT, spiritual leadership can enhance followers' psychological capital, resulting in a higher job engagement. A person's positive psychological condition of development, marked by self-efficacy, optimism, hope, and resiliency, is referred to as psychological capital [14]. Spiritual leaders will likely create a welcoming and caring environment by treating their followers with concern, respect, and confidence [15]. Employee psychological capital can be developed in a supportive organizational context [16].
The SLT model essentially differentiates between two types of spiritual well-being: calling and membership. The source of incentive calling is found in the workplace, but the motivation for membership is the organization [15]. Employers view work as a job or profession when they are busy working every day. Some individuals may only view work as a means of making money or moving up the corporate ladder. However, people may also see employment as a way to fulfill their needs, discover their purpose in life, or give back to the community. Researchers categorize these individuals as having a sense of calling while working [4,17]. "The experience of transcendence" or "how one makes a difference by serving others and, in doing so, finds meaning and purpose in life" is what calling is described as [4]. According to SLT, spiritual leaders can provide their followers with a sense of purpose, meaning, and the ability to make a difference, and develop a meaningful vision. Spiritual leaders can improve their followers' sense of calling at work and their psychological capital [4,18].
Furthermore, according to SLT, calling is an essential mechanism through which spiritual leaders promote employees' positive outcomes. Calling shows that people's perceptions of their well-being, such as their sense of purpose in life or their level of contentment, are positively correlated with psychological capital [19]. Also, self-efficacy is one of the crucial elements of psychological capital, and studies have shown that calling is positively associated with it [20]. Finally, calling is positively linked to job satisfaction. Employees are more likely to feel happy and optimistic when they are more satisfied at work. Positive emotions often lead to more significant psychological capital development in individuals [21,22].

Significance of the study
Universities play a vital role in human capital education. It points out that the efficiency and effectiveness of the country's educational systems promote overall development and growth. Nurse educators are one of the most significant resources in any society, one of the most essential factors in educational systems, and they play a crucial role in training specialized forces. Therefore, achieving good psychological capital is very important; spiritual leadership can be improved by changing and manipulating psychological capital factors, thus moving toward the organization's development [23]. Spiritual leadership plays a significant role in educational organizations that aim to raise successful nurse educators in every sphere of life. This is because academic life includes a mix of interactions between the spiritual and physical worlds. Nurse educators who view work as a spiritual expression will have a more positive outlook, contribute more, create better working conditions effectively, and lead to a better quality of work life [24].
Therefore, the two issues of spiritual leadership and psychological capital in the workplace are complementary. However, only a few studies have looked at this relationship worldwide. Therefore, knowledge of these variables is vital when designing interventions or developing organizational policies to enhance spiritual leadership behavior and psychological capital among nursing educators. Therefore, the present study was conducted to examine the levels of spiritual leadership and psychological capital among nursing educators and to determine the relationship between spiritual leadership and psychological capital among nurse educators. Moreover, this study is the first to examine the relationship between spiritual leadership and psychological capital among nursing educators in Egypt.

Study design
A cross-sectional study was conducted in all academic departments at the Faculty of Nursing, Alexandria University, Egypt. It includes Medical and Surgical Nursing, Pediatric Nursing, Obstetrics and Gynecology Nursing, Psychiatric and Mental Health Nursing, Nursing Administration, Community Health Nursing, Critical Care and Emergency Nursing, Nursing Education, and Geriatric Nursing.

Participants: sample size calculation and sampling technique
The researchers in the present study used convenient cluster sampling to select participants for recruitment from all academic positions (approximately 35 participants from each position). Academic positions at the faculty of nursing, Alexandria University, Egypt, include about 372 nurse educators, distributed as follows: professors (75), assistant professors (62), lecturers (88), assistant lecturers (60), demonstrators, and practical guides (87). For sample size calculation, the total population of nursing educators was 372, with a 5% acceptable error, a 50% expected frequency, and a 95% confidence coefficient. The Epi-Info Program indicated that the minimal sample size should be 190. The chosen number of recruited participants in the present study reached 213.
The inclusion criteria consisted of the subjects of the study who work in the previously mentioned departments with more than 6 months of experience, currently teaching or providing educational services for nursing students, full-time employment (at least 20 hours of work per week), were available during the time of data collection, and the subjects of the study showed an interest in participating in this study. Whereas all nursing educators who didn't have the previous characteristics were excluded.

Data collection
The researchers used a three-section-based questionnaire for data collection (Supplementary file). Section 1. Socio-demographics: sex, age, marital status, number of children, residence, educational qualifications, academic position, department, years of experience since bachelor of nursing graduation, and years of experience in current position. Section 2. Spiritual Leadership Questionnaire (SLQ): Fry et al., (2005) developed it to assess spiritual leadership levels among nurse educators. It consisted of 17 items grouped under three dimensions, like the following: Vision consisted of five items; Hope/Faith consisted of five items. Finally, altruistic love consisted of seven items. The scoring system of SLQ was a five-point Likert scale ranging from strongly agree=(5) to strongly disagree=(1) . Items were scored 5, 4, 3, 2, and 1 for the responses "strongly agree, " "agree, " "neutral, " "disagree, " and "strongly disagree, " respectively [18].
The overall score of the spiritual leadership scale and its dimensions were measured based on five points Likert Scale ranging and grading as (> 75%) indicated high agreements on the overall spiritual leadership scale and its dimensions, (50% -< 75%) indicated moderate agreements on overall spiritual leadership scale and its dimensions, (< 50%) indicated low agreements on overall spiritual leadership scale and its dimensions. The Cronbach's alpha reliability estimate in the present study was 0.961, and that of the original study was 0.980 [18]. Section 3. Psychological Capital Questionnaire (PCQ): The 24-item Psychological Capital Questionnaire (PCQ) developed by Luthans, Youssef, and Avolio, (2017) was utilized in this study. The instrument consisted of four constructs: self-efficacy, hope, reliance, and optimism. Additionally, each construct was measured based on six items. The scoring system of SLQ was a five-point Likert scale ranging from strongly agree= (5)to strongly disagree=(1). Items were scored 5, 4, 3, 2, and 1 for the responses "strongly agree, " "agree, " "neutral, " "disagree, " and "strongly disagree, " respectively [25].
The overall scores were measured based on five points Likert Scale ranging and grading as (> 75%) indicated high agreements on the overall psychological capital scale and its dimensions, (50 -< 75%) indicated moderate agreements on the overall psychological capital scale and its dimensions, (< 50%) indicated low agreements on the overall psychological capital scale and its dimensions. The Cronbach's alpha reliability estimate in the present study was 0.965, and in another study was 0.910 [26]. It also worth mentioned that the researchers in the present study take a permission to use the PCQ by Mind Garden (Order number = FHQGGJGOE, from/https:// www. mindg arden. com).

Ethical consideration
The approval of the Research Ethics Committee (REC), Faculty of Nursing, Alexandria University, was obtained for the study settings to gather the necessary data. The aim of the study was clarified to the participating nurses through emails and What's App was assured that all data would be used for research purposes only and each one was informed of the right to refuse participation in the study or withdraw at any time before completing the study tools with no consequences. Informed written consent was obtained from nursing educators who accepted to participate in the study. Anonymity was considered and respected. Data confidentiality was assured during the implementation of the study.

Data collection phase
Official permission from the faculty of nursing authorities at Alexandria University, Egypt, was obtained to conduct the study. A pilot study was done to assess the study instruments' applicability, clarity, and practicality. It was carried out on 25 nursing educators who were not included in the study's participants. The pilot's findings revealed that no changes were needed. The internal consistency of the research instruments was assessed using the Alpha Cronbach's test showed good reliability for the study tools. As well as the data was collected from November 2021 to February 2022.

Statistical analysis
The collected data were summarized and presented in tables. Continuous non-normally distributed variables were presented as a median and Interquartile range (IQR), and categorical variables were presented as numbers and percentages. The Spearman correlation evaluated the relationship between the spiritual leadership and psychological capital scales. The correlation coefficient was interpreted as low correlation, moderate correlation, and strong correlation. P-values ≤0.05 were considered statistically significant. The multinomial logistic regression model was used for spiritual leadership and psychological capital scales, and the reference category was "low". The previous tests were conducted using statistical analyses using the Statistical Package for the Social Sciences (SPSS) software, version 28.0 (IBM Corp., Armonk, NY, USA).

Results
The results reflected 215 responses; two participants were excluded due to not being accepted to participate in our study. They left 213 responses included in our analysis. Table 1 showed that the majority of the nursing educators are females (91.5%), and about two-thirds of study participants were married (70.4%). While more than three-fifths of them are married (70.4%). Moreover, more than half of the study-nursing educators are Ph.D. Graduates (54.9%).
The overall SL level is moderate (49.8%). Regarding nursing educators' subscales, the highest percentage was reported on the "altruistic love" subscale (54%), while the lowest one was reported on the "hope and faith" subscale (28.6%). The largest percentage of respondents (65.3%) who scored an individual subscale as "high level" was for the "hope and faith" subscale. Moreover, the lowest percentage was reported on the "altruistic love" subscale (25.8%). The largest percentage of respondents (20.2%) who scored an individual subscale as "low level" was for the "altruistic love" subscale. In addition, the lowest percentage was reported on the "hope and faith" subscale (6.1%) ( Table 2). Table 3 shows that the overall psychological capital level is high (63.4%). Regarding the nursing educators subscales, the highest percentage was reported on the "self-efficacy" subscale (67.6%), while the lowest one was reported on the "optimism" subscale (46.9%). The largest percentage of respondents (5.2%) who scored an individual subscale as "low level" was for the "hope" subscale. Moreover, the lowest percentage was reported on the "resilience" subscale (3.3%). While the largest percentage of respondents (49.3%) who scored an individual subscale as "moderate level" was for the "optimism" subscale. And the lowest percentage was reported on the "self-efficacy" subscale (28.6%). Table 4 Table 5 pointed that having a Ph.D. Was expected to have high agreement on overall spiritual leadership questions 1.87 times (95% confident interval (CI) [0.428-8.207]) more than having a Bachelor of Nursing. Being a professor predicted having high and moderate agreement on overall spiritual leadership questions 11.903 and 2.764 times more than a practical guide, respectively. Being an assistant professor, lecturer, assistant lecturer, and demonstrator predicted having high agreement on overall spiritual leadership questions 1.450, 4.529, 3.479, and 3.941 times more than being a practical guide. From 10 to 15 years of experience within the department was expected to have high and moderate agreement on overall spiritual leadership questions 1.124 and 1.594 times more than having more than 15 years of experience within the department, respectively ( Table 5). Scores of vision hope and faith, altruistic love, self-efficacy, and hope were significant predicators for high and moderate agreement on overall spiritual leadership questions (p-value < 0.05). Low and moderate self-efficacy, hope, and resilience were significant predicators for high and moderate agreement on overall spiritual leadership questions (p-value < 0.05). The score of the psychological capital scale was a significant predictor of high and moderate agreement on overall spiritual leadership questions (p-value < 0.05). Table 6 showed that being a male was expected to have high and moderate agreement on overall psychological capital questions 1.563 and 1.600 times more than being a female. Being single was predicted to have high and moderate agreement on overall psychological capital questions 2.299 and 3.924 times more than being a widow.

Discussion
Recently, leadership studies changed direction, and they have started to focus on ethical, spiritual, and more human-focused versions of leadership aiming at justice, participation, and glorifying employees, rather than hierarchical chief-officer relationships [27]. Overall, nursing educators perceived their leadership behaviors as moderate level. This result is in line with a recent studies done by Abouzaid, (2019) and Ali, Ibrahim, & Diab, (2021) who reported that the total levels of spiritual leadership among nurse leaders were between moderate to high [28,29]. As well as Ali, Ibrahim, & Diab, (2021) showed that nursing managers' spiritual leadership levels were high on the level of meaning/calling, vision, and hope/faith dimensions while the largest percentage of participants who scored an individual subscale as "low level" was for the "altruistic love" subscale [29]. The total score for psychological capital in the present study was high. This may have occurred because there was an effective organizational climate, effective communication between nursing educators and their managers, or a low level of perceived occupational stress. This result was supported by the studies of Çelik, (2018) and Ibrahim, Elwekel, Osman, & El-Gilany, (2020), who found that the majority of the nurses exhibited high levels of psychological capital [30,31]. This result disagreed with a study done by Metwaly & Ahmed, (2018), who revealed that the studied nurses had a low level of psychological capital. The current results also showed that the highest percentage was reported on the "self-efficacy" subscale, while the lowest one was reported on the "optimism" subscale [32]. In the same line, Percunda & Putri, (2020) found that the nurse participants have high scores in selfefficacy and hope, followed by optimism and resilience [33].
The present study revealed a significant positive correlation between spiritual leadership practices and psychological capital; with another meaning, the researchers in the present study found that the more nursing educators reported spiritual leadership, the more they reported psychological capital. This may be explained by the fact that when nurse educators have a clear sense of purpose in their profession, they feel joy, contentment, and selfworth at work. Fredrickson's broaden-and-build theory of positive emotions serves as the theoretical foundation for the hypothesized relationship between spiritual leadership and psychological capital. Fredrickson claims that nurturing happy feelings at work leads to happiness [34].
Relevant studies have revealed that positive psychological capital and appropriate leadership styles, especially spiritual leadership, can revolutionize the nursing environment, promote retention, increase productivity, enhance their positive psychological state, and provide meaning and purpose in work for nurses and nurse educators [35,36]. These findings highlight the need to develop strategies for improving spiritual leadership among nursing educators through education, training, and policy development.
Other studies have shown a positive correlation between spiritual leadership practices and psychological capital; Chen and Li, (2013) reported that spiritual leadership is positively related to employees' self-esteem and self-efficacy, which were considered two of the main components of psychological capital [15]. In another study done by Wu, & Lee, (2020) about the effect of spiritual leadership on nurses' work engagement and psychological capital, they found that the more the studied nurses reported high spiritual leadership, the more they experienced high psychological capital [22].
The new phenomenon of spiritual leadership in organization management that focuses on the humanistic values of the organization's followers, like; intimacy, honesty, love, emotion, generosity, cooperation, hope, kindness, and altruism, can be developed in managerial activities. All of these activities will develop a sense of belonging and self-identity among the organization's employees, which will be reflected in their self-efficacy. The results also showed that spiritual leadership positively correlates with nursing educators' self-efficacy. That was consistent with a study done by Faghih Aram, (2017) in Iran between high school managers and staff; she found that spiritual leadership had a significant positive relationship with the self-efficacy of managers and employees. In addition, the overlook of the love of altruism, faith in work, organizational membership, organizational commitment, and significant improvements in work productivity showed a significant relationship with efficacy [37].
In addition, the positive correlation between spiritual leadership, hope, and optimism of psychological capital can be justified as nurses who work under spiritual leaders are more likely to achieve work goals, and successful work experiences lead to increased motivation and optimism in their jobs. The most unexpected finding in the current study was that male participants were expected to have more spiritual leadership and psychological capital than females, even with the small number of male educators who participated in the present study. This may be related to the fact that male educators have greater wisdom than female educators and have a perceptive and wise perspective [38].
Moreover, Radu, (2017) reported that males have characteristics that make them better at leadership. These criteria include tradition (accumulating information based on prior experience), innovation (being open to new ideas and willing to take risks), strategy (seeing the big picture), calmness (tending to keep their emotions in check), delegation (assigning goals and responsibilities), cooperation (being good teammates), and persuasion (they sell ideas and win people over) [39]. In addition, nursing educators who have a Ph.D. Education was expected to have higher agreement on spiritual leadership and psychological capital than those with a bachelor's degree in nursing. Nursing educators who were assistant lecturers and demonstrators are expected to have more spiritual leadership and psychological capital than other degrees.

Limitations
This research has several limitations. First, causality cannot be determined because this study used a cross-sectional methodology. As a result, a subsequent study using a more rigorous research technique may be considered. Due to the use of self-reported measures, response bias may exist. Second, the study's sample size was limited, which limited the results' application and weakened the statistical power. To identify causal links and differences across variables, longitudinal empirical investigations with large samples are necessary. More study is needed to see how these spiritual and psychological capital practices affect nursing educators' health outcomes and treatment quality.

Conclusion
In general, the findings of this study showed that nursing educators had moderate to high levels of spiritual leadership and psychological capital. In addition, there is a strong, positive, and highly significant correlation between spiritual leadership and psychological capital. Finally, although some socio-demographic and clinical data of nursing educators reflected an expected agreement with spiritual leadership and psychological capital, these factors need to be assessed in the future with more focus and analysis.

Implications for nursing management
Our study results suggest that spiritual leadership is pivotal in promoting followers' psychological capital. Therefore, our work validates the importance of developing and practicing spiritual leadership to foster followers' psychological capital. Nursing leaders must have spiritual competencies and must include the promotion of workplace spirituality on the daily agenda as a foundational area in management. As well as the healthcare institutions' managers, they should also consider the best leaders who facilitate workplace spirituality.